KR102002503B1 - Mobile terminal, home appliance, and nethod for operating the same - Google Patents

Abstract

The present invention relates to a refrigerator, a home appliance, and a method of operating the same. A refrigerator according to an embodiment of the present invention includes a motor for driving a compressor, an output current detector for detecting a current flowing through the motor, a compressor micom for calculating power consumed by the compressor based on the detected output current, and a plurality of compressors. Receiving power consumption of the unit and the compressor power consumption information calculated, and using the pre-stored power consumption information and the calculated compressor power consumption information for each unit according to the operation status of the plurality of power consumption units, the final power consumption. It includes a main microcomputer that calculates power. Accordingly, the power consumption calculation can be performed easily.

Description

Refrigerator, home appliance and operation method thereof {Mobile terminal, home appliance, and nethod for operating the same}

The present invention relates to a refrigerator, a home appliance, and a method of operating the same. More particularly, the present invention relates to a refrigerator, a home appliance, and a method of operating the same.

Generally, a refrigerator is a device used for long-term storage of fresh food, and includes a freezer compartment for freezing food, a refrigerating chamber for refrigerating plants, and a freezing cycle for cooling the freezer and refrigerator compartment. The operation control is performed by the controller.

Unlike in the past, the refrigerator is not only a space for food, but also a family room where the family members are gathering and talking and solving the food. In addition, quantitative and qualitative functional changes are required for all family members to use easily.

An object of the present invention is to provide a refrigerator, a home appliance, and a method of operating the same, which can easily perform power consumption calculation.

A refrigerator according to an embodiment of the present invention for achieving the above object, the motor for driving the compressor, the output current detector for detecting the current flowing in the motor, and based on the detected output current, calculates the power consumed in the compressor Receives a compressor microcomputer, a plurality of power consumption units, and calculated compressor power consumption information, and according to the operation of the plurality of power consumption units, power consumption information previously stored for each unit, and calculated compressor power consumption information. By using, the main microcomputer to calculate the final power consumption.

In addition, the operation method of the refrigerator according to an embodiment of the present invention for achieving the above object, when the compressor is operating, calculating the compressor power consumption based on the current flowing in the motor for driving the compressor, machine room motor Determining whether at least one of the freezer compartment motor and the home bar heater is in operation; and when at least one of the machine room motor, the freezer motor, and the home bar heater is in operation, the pre-stored power consumption of each unit for the unit Calculating seed power consumption using the information and the calculated compressor power consumption information.

In addition, a home appliance according to an embodiment of the present invention for achieving the above object, the first power consumption unit, a first microcomputer for calculating the first power consumed in the first power consumption unit, a plurality of power consumption unit And the first power information to be calculated, and calculates the final power consumption using the pre-stored power consumption information and the calculated power consumption information for each unit according to the operation of the plurality of power consumption units. Includes microcomputer.

According to an embodiment of the present invention, the current flowing through the motor for driving the compressor is detected, and based on the detected output current, the power consumed in the compressor is calculated, and each unit is operated according to whether or not the plurality of power consumption units are operated. By calculating the final power consumption using the pre-stored power consumption information and the calculated compressor power consumption information, it is possible to easily perform the power consumption calculation consumed in the entire refrigerator.

In particular, since the compressor micom calculates the compressor power consumption consumed by the compressor and the main micom receives it, the main micom can obtain the compressor power consumption calculated by the compressor micom without any additional calculation.

On the other hand, by using the power consumption information for each power consumption unit pre-stored in the memory, the main microcomputer can easily calculate the final power consumption by adding up the compressor power consumption and the power consumption information for each unit.

1 is a perspective view illustrating a refrigerator according to an embodiment of the present invention.
FIG. 2 is a perspective view of the door of the refrigerator of FIG. 1.
3 is a view illustrating the ice maker of FIG. 2.
4 is a view schematically illustrating the configuration of the refrigerator of FIG. 1.
FIG. 5 is a block diagram schematically illustrating the inside of the refrigerator illustrated in FIG. 1.
FIG. 6 is a diagram illustrating a circuit unit inside the refrigerator illustrated in FIG. 1.
7 is a view illustrating a method of calculating a power consumption of a refrigerator according to an embodiment of the present invention.
FIG. 8 is a circuit diagram illustrating the compressor driver of FIG. 6.
9A to 9C are views referred to for describing a method of data communication between microcomputers in a refrigerator.
10 is a diagram illustrating an example of power consumption for each unit stored in a memory.
11 is a diagram referred to describe power consumption compensation.
12 is a flowchart illustrating a method of operating a refrigerator according to an embodiment of the present invention.
FIG. 13 is a circuit diagram illustrating an example of the inside of the compressor microcomputer of FIG. 8.
14 is a diagram illustrating various examples of a home appliance according to another embodiment of the present invention.
FIG. 15 is a simplified internal block diagram of the home appliance of FIG. 14.

Hereinafter, with reference to the drawings will be described the present invention in more detail.

The suffixes "module" and "unit" for components used in the following description are merely given in consideration of ease of preparation of the present specification, and do not impart any particular meaning or role by themselves. Therefore, the "module" and "unit" may be used interchangeably.

1 is a perspective view illustrating a refrigerator according to an embodiment of the present invention.

Referring to the drawings, the refrigerator 1 according to the present invention, although not shown, a case 110 having an internal space divided into a freezer compartment and a refrigerating compartment, a freezer compartment door 120 that shields the freezer compartment, and a refrigerating compartment. The exterior of the refrigerator compartment door 140 is formed.

In addition, the front surface of the freezer compartment door 120 and the refrigerating compartment door 140 is further provided with a door handle 121 protruding forward, so that the user easily grips and rotates the freezer compartment door 120 and the refrigerating compartment door 140. Make it work.

On the other hand, the front of the refrigerator compartment door 140 may be further provided with a home bar 180, which is a convenient means for allowing a user to take out a storage such as a beverage contained therein without opening the refrigerator compartment door 140.

In addition, the front of the freezer compartment door 120 may be provided with a dispenser 160, which is a convenient means for allowing the user to easily take out ice or drinking water without opening the freezer compartment door 120, such a dispenser 160 An upper side of the control panel 210 may be further provided to control the driving operation of the refrigerator 1 and to show the state of the refrigerator 1 being operated on the screen.

Meanwhile, in the drawing, the dispenser 160 is illustrated as being disposed on the front surface of the freezer compartment door 120, but is not limited thereto, and may be disposed on the front side of the refrigerating compartment door 140.

Meanwhile, an ice maker 190 for ice-making water supplied using cold air in the freezer compartment and an ice bank mounted inside the freezer compartment (not shown) are included in the freezer compartment (not shown). 195 may be further provided. In addition, although not shown in the drawings, an ice chute (not shown) may be further provided to guide the ice contained in the ice bank 195 to fall into the dispenser 160. The ice maker 190 will be described later with reference to FIG. 3.

The control panel 210 may include an input unit 220 including a plurality of buttons, and a display unit 230 for displaying a control screen and an operation state.

The display unit 230 displays information such as a control screen, an operation state, and a temperature inside the refrigerator. For example, the display unit 230 may display a service type of the dispenser (eg, ice, water, flake ice), a set temperature of the freezer compartment, and a set temperature of the refrigerator compartment.

The display unit 230 may be implemented in various ways, such as a liquid crystal display (LCD), a light emitting diode (LED), an organic light emitting diode (OLED), and the like. In addition, the display unit 230 may be implemented as a touch screen capable of performing the function of the input unit 220.

The input unit 220 may include a plurality of operation buttons. For example, the input unit 220 may include a dispenser setting button (not shown) for setting a service type of the dispenser (ice ice, water, crushed ice, etc.) and a freezer temperature setting button (not shown) for setting a freezer temperature. And, it may include a refrigerator compartment temperature setting button (not shown) for setting the freezer compartment temperature. The input unit 220 may be implemented as a touch screen that can also perform the function of the display unit 230.

Meanwhile, the refrigerator according to the embodiment of the present invention is not limited to the double door type shown in the drawings, but is a one door type, a sliding door type, a curtain door type. Regardless of its form, such as a (Curtain Door Type), as described later, it is sufficient that the ice bank vibrating unit 175 for vibrating the ice bank 195 and the ice bank 195 is provided inside the freezer compartment.

FIG. 2 is a perspective view of the door of the refrigerator of FIG. 1.

Referring to the drawings, a freezer compartment 155 is disposed inside the freezer compartment door 120, and a refrigerating compartment 157 is disposed inside the refrigerator compartment door 140.

An ice maker 190 for ice-making water supplied using cold air in the freezer compartment 155 and an ice bank mounted inside a freezer compartment (not shown) are included in the freezer compartment 155 so that ice iced by the ice maker is iced. 195, an ice bank vibrator 175 for vibrating the ice bank 195, and a dispenser 160 are disposed. In addition, although not shown in the drawing, an ice chute (not shown) for guiding the ice contained in the ice bank 195 to fall to the dispenser 160 may be further disposed.

3 is a view illustrating the ice maker of FIG. 2.

Referring to the drawings, the ice maker 190 includes an ice making tray 212 for containing water for ice making and making a predetermined shape of ice, a water supply unit 213 for supplying water to the ice making tray 212, And a slider 214 provided to slide the iced ice into the ice bank 190, and a heater (not shown) for separating the iced ice from the ice making tray 212.

The ice making tray 212 may be fastened to the freezing compartment 155 of the refrigerator by the fastening part 212a.

In addition, the ice maker 190 is axially coupled with an ice maker 216 for operating the ejector 217 and a motor (not shown) provided in the ice maker 216 and completely iced in the ice maker tray 212. It further comprises an ejector 217 for taking out the ice bank (195).

The ice making tray 212 has a semi-cylindrical shape, and a partition protrusion 212b is formed on the inner surface of the ice making tray 212 at predetermined intervals so that ice can be separated out.

The ejector 217 also includes an axis 217a formed to cross the center of the ice making tray 212 and a plurality of ejector pins 217b formed on the side of the axis 217a of the ejector 217. do.

Here, each ejector pin 217a is located between the partition protrusions 212b of the ice making tray 212, respectively.

The ejector pin 217a is a means for taking the manufactured ice out into the ice bank 195. For example, the ice moved by the ejector pin 217a is placed on the slider 214 and then slides along the surface of the slider 214 to fall into the ice bank 195.

On the other hand, although not shown in the drawing, a heater (not shown) is attached to the bottom of the ice making tray 212, raises the temperature of the ice making tray 212, melts the ice stuck on the surface of the ice making tray 212, It serves to separate from the ice tray 212. The separated ice is discharged to the ice bank 195 by the ejector 217.

Meanwhile, the ice maker 190 detects whether the ice bank 195 located at the lower portion of the ice bank 195 is full of ice before separating the ice from the ice making tray 212 (hereinafter, referred to as 'foam detection'). It may further include an optical transmitter 233 and the optical receiver 234.

The light transmitter 233 and the light receiver 234 may be disposed under the ice maker 190 and may transmit and receive predetermined light in the ice bank 195 using an infrared sensor or a light emitting diode (LED).

For example, when an infrared sensor type is used, an infrared transmitter 233 and an infrared receiver 234 are provided below the ice maker 190, respectively. If not full, the infrared receiver 234 receives a high level signal, and when full, receives a low level signal. As a result, the main microcomputer 310 determines whether or not the ice is full. On the other hand, one or more infrared receiver 234 may be used, it is shown as two in the figure.

Meanwhile, the light transmitter 233 and the light receiver 234 may be implemented in a structure embedded in the lower case 219 of the ice maker 190 in order to protect the device from moisture, frost and the like caused by ice.

The signal received from the light receiving unit 234 is input to the main microcomputer 310, and in the event of full ice, the main microcomputer 310 controls the operation of the ice making driver 216 so that the ice is no longer ice bank 195. Do not take out with).

Meanwhile, an ice bank vibrator 175 for vibrating the ice bank 195 may be disposed at a lower end of the ice bank 195. In the drawing, although the ice bank vibrator 175 is disposed at the lower end of the ice bank 195, the ice bank vibrator 175 may be vibrated.

4 is a view schematically illustrating the configuration of the refrigerator of FIG. 1.

Referring to the drawings, the refrigerator 1 includes a compressor 112, a condenser 116 for condensing the refrigerant compressed by the compressor 112, and a refrigerant condensed by the condenser 116 to be evaporated. A freezer compartment evaporator 124 disposed in a freezer compartment (not shown) and a freezer compartment expansion valve 134 for expanding the refrigerant supplied to the freezer compartment evaporator 124 may be included.

On the other hand, in the drawing, but illustrated as using one evaporator, it is also possible to use each evaporator in the refrigerating chamber and freezing chamber.

That is, the refrigerator 1 is a three-way valve for supplying a refrigerator compartment evaporator (not shown) arranged in the refrigerator compartment (not shown), the refrigerant condensed in the condenser 116 to the refrigerator compartment evaporator (not shown) or the freezer compartment evaporator 124. (Not shown) and a refrigerator compartment expansion valve (not shown) for expanding the refrigerant supplied to the refrigerator compartment evaporator (not shown).

In addition, the refrigerator 1 may further include a gas-liquid separator (not shown) in which the refrigerant passing through the evaporator 124 is separated into a liquid and a gas.

In addition, the refrigerator 1 further includes a refrigerator compartment fan (not shown) and a freezer compartment 144 that suck cold air that has passed through the freezer compartment evaporator 124 and blow it into a refrigerator compartment (not shown) and a freezer compartment (not shown), respectively. can do.

In addition, the compressor driving unit 113 for driving the compressor 112, the refrigerator compartment fan (not shown) and the refrigerator compartment fan driver (not shown) and the freezer compartment fan drive unit 145 for driving the freezer compartment 144 may be further included. have.

Meanwhile, according to the drawing, since a common evaporator 124 is used in the refrigerating compartment and the freezing compartment, in this case, a damper (not shown) may be installed between the refrigerating compartment and the freezing compartment, and the fan (not shown) is one evaporator. The cold air generated in the air may be forced to be supplied to the freezing compartment and the refrigerating compartment.

FIG. 5 is a block diagram schematically illustrating the inside of the refrigerator illustrated in FIG. 1.

Referring to the drawings, the refrigerator of FIG. 5 includes a compressor 112, a machine room fan 115, a freezer compartment fan 144, a main microcomputer 310, a heater 330, an ice maker 190, and an ice bank 195. ), A temperature sensor 320, and a memory 240. The refrigerator may include a compressor driver 113, a machine room fan driver 117, a freezer compartment fan driver 145, a heater driver 332, an ice maker 216, an ice bank vibrator 175, a display unit 230, And an input unit 220.

The compressor 112, the machine room fan 115, and the freezer compartment fan 144 are described with reference to FIG. 2.

The input unit 220 includes a plurality of operation buttons, and transmits a signal for an input freezing compartment set temperature or a refrigerator compartment set temperature to the main microcomputer 310.

The display unit 230 may display an operation state of the refrigerator. In particular, in relation to an embodiment of the present invention, the display unit 230 may display final power consumption information or cumulative power consumption information based on the final power consumption. The display unit 230 can be operated by the control of the display micom (432 of FIG. 9A).

The memory 240 may store data necessary for operating the refrigerator. In particular, in relation to an embodiment of the present invention, the memory 240 may store power consumption information for each of the plurality of power consumption units, as shown in the table 1010 of FIG. 10. The memory 240 may output corresponding power consumption information to the main microcomputer 310 according to whether each power consumption unit in the refrigerator operates.

Meanwhile, the memory 240 may store component distributions of a plurality of power consumption units.

The temperature sensor 320 detects a temperature in the refrigerator and transmits a signal for the detected temperature to the main microcomputer 310. Here, the temperature detector 320 detects the refrigerator compartment temperature and the freezer compartment temperature, respectively. In addition, the temperature of each chamber in the refrigerating chamber or each chamber in the freezing chamber may be sensed.

The main microcomputer 310 controls the compressor 112 and the fan driver 117 or 145, as shown in the figure, to control the on / off operation of the compressor 112 and the fan 115 or 144. By controlling, the compressor 112 and the fan 115 or 144 can finally be controlled. Here, the fan driver may be a machine room fan driver 117 or a freezer compartment fan driver 145.

For example, the main microcomputer 310 may output a speed command value signal corresponding to the compressor driver 113 or the fan driver 117 or 145, respectively.

The compressor drive unit 113 and the freezer compartment fan drive unit 145 described above are each provided with a compressor motor (not shown) and a freezer compartment fan motor (not shown), and each motor (not shown) is a main microcomputer 310. It can be operated at a target rotational speed under the control of.

On the other hand, the machine room fan drive unit 117, a gas chamber fan motor (not shown), the cell chamber fan motor (not shown) may be operated at a target rotational speed under the control of the main microcomputer (310).

When such a motor is a three-phase motor, it may be controlled by a switching operation in an inverter (not shown) or may be controlled at a constant speed by using an AC power source as it is. Here, each motor (not shown) may be any one of an induction motor, a BLDC (Blush less DC) motor, a synchronous reluctance motor (synRM) motor, and the like.

On the other hand, as described above, the main microcomputer 310 may control the operation of the entire refrigerator 1 in addition to the operation control of the compressor 112 and the fan 115 or 144.

For example, the main microcomputer 310 may control the operation of the ice bank vibrator 175. In particular, when the ice is detected, it is controlled to take out ice from the ice maker 190 to the ice bank 195, and also to control the ice bank 195 to vibrate during taking out ice or within a predetermined time after taking out the ice. In this way, by vibrating the ice bank 195 at the time of taking out the ice, the ice in the ice bank 195 can be evenly distributed without clumping.

In addition, the main microcomputer 310 may vibrate the ice bank 195 repeatedly at predetermined time intervals in order to prevent the ice from being stuck due to the ice storage state in the ice bank 195.

In addition, when the dispenser 160 is operated by a user's operation, the main microcomputer 310 controls the ice in the ice bank 195 to be taken out of the ice into the dispenser 160, and at the time of taking out the ice or It can be controlled to vibrate the ice bank 195 just before taking out. Specifically, the ice bank vibrator 175 may be controlled to operate the ice bank 195. Thereby, the entanglement of the ice taken out to a user at the time of taking out ice can be prevented.

The main microcomputer 310 may control to operate a heater (not shown) in the ice maker 190 to lift the ice in the ice tray 212.

Meanwhile, the main microcomputer 310 may control the ice making driver 216 to operate the ejector 217 in the ice maker 190 after the heater (not shown) is turned on. This is a control operation for smoothly taking out ice into the ice bank 195.

On the other hand, the main microcomputer 310 may control to turn off the heater (not shown) when the ice in the ice bank 195 is determined to be full ice. In addition, it may be controlled to stop the operation of the ejector 217 in the ice maker 190.

On the other hand, as described above, the main microcomputer 310 may control the overall operation of the refrigerant cycle according to the set temperature from the input unit 220. For example, in addition to the compressor driver 113, the refrigerator compartment fan driver 143, and the freezer compartment fan driver 145, the three-way valve 130, the refrigerator compartment expansion valve 132, and the freezer compartment expansion valve 134 may be further controlled. Can be. In addition, the operation of the condenser 116 can also be controlled. In addition, the main microcomputer 310 may control the operation of the display unit 230.

On the other hand, the main microcomputer 310 receives the compressor power consumption information from the compressor microcomputer 430, according to the operation of the plurality of power consumption units, the power consumption information previously stored for each unit, and the calculated compressor power consumption The information can be used to calculate the final power consumption. This will be described later with reference to FIG. 6 and below.

Meanwhile, the main microcomputer 310 performs power compensation on power consumption of some of the plurality of power consumption units in operation, and based on the compensated power consumption information and the calculated compressor power consumption information, The power consumption can be calculated. In particular, when some units operate by an AC power source, the main microcomputer 310 may perform power compensation in consideration of the instantaneous value of the AC power source.

On the other hand, the main microcomputer 310, the DC power supply value and the direct current of the dc stage, which is an input terminal of the inverter (420 in Fig. 8) for driving the compressor 122, when some units in the refrigerator is operated by the AC power source The difference value from the reference value may be used to compensate for power consumption of some units, and the final power consumption of the refrigerator may be calculated based on the compensated power consumption information and the calculated compressor power consumption information.

On the other hand, the main microcomputer 310 compensates for the power consumption consumed in each unit in consideration of the presence or absence of operation of the plurality of power consumption units and the distribution of parts of the plurality of power consumption units stored in the memory 240, The final power consumption may be calculated using the power consumption information and the calculated compressor power consumption.

On the other hand, the main microcomputer 310, the DC power supply of the dc stage, which is the input terminal of the inverter (420 in Fig. 8) for driving the compressor 122, when a predetermined time exceeds the allowable value, a plurality of power consumption unit For power consumption of some of the units in operation, power compensation may be performed and the final power consumption may be calculated based on the compensated power consumption information and the calculated compressor power consumption information. Detailed description of the final power consumption information calculation and the like of the main microcomputer 310 will be described later with reference to FIG. 6 and below.

Meanwhile, the heater 330 may be a freezer compartment defrost heater. The freezer compartment defrost heater 330 may operate to remove frost attached to the freezer compartment evaporator 124. To this end, the heater driver 332 may control the operation of the heater 330. The main microcomputer 310 may control the heater driver 332.

FIG. 6 is a view illustrating a circuit unit inside the refrigerator illustrated in FIG. 1, and FIG. 7 is a view illustrating a method of calculating a power consumption of a refrigerator according to an embodiment of the present invention.

First, referring to FIG. 6, the circuit unit 610 of FIG. 6 may include at least one circuit board provided in the refrigerator.

Specifically, the circuit unit 610 may include an input current detector A, a power supply unit 415, a main micom 310, a memory 240, a compressor micom 430, a display micom 432, and a communication micom 434. ) May be provided.

First, the input current detector A can detect the input current is input from the commercial AC power supply 405. To this end, a CT (current trnasformer), a shunt resistor, or the like may be used as the input current detector A. FIG. The detected input current is, as a discrete signal in the form of a pulse, and may be input to the main microcomputer 310 for power factor estimation.

The power supply unit 415 may convert the input AC power into power to generate operating power such that each unit in the circuit unit 610 is operable. Here, the operating power source may be a direct current power source. To this end, the power supply 415 may have a converter with a switching element or a rectifier without a switching element.

The compressor microcomputer 430 outputs a signal for driving the compressor 112. Although not shown in the drawing, an inverter (not shown) may be used to operate a compressor motor provided in the compressor 112, and the compressor micom 430 may provide a switching control signal Si to the inverter (not shown). The inverter can be controlled by outputting. Then, the current io flowing through the compressor motor is input and the switching control signal Si may be generated by feedback control.

The display microcomputer 432 may control the display unit 230. Data to be displayed on the display unit 230 may be generated and transmitted to the display unit 230, or data input from the main microcomputer 310 may be transmitted to the display unit 310.

The communication microcomputer 434 may control a communication unit (not shown) provided in the refrigerator 1. The communication unit (not shown) may include at least one of a wireless communication unit such as WiFi or Zigbee, a near field communication unit such as NFC, and a wired communication unit such as UART.

In the drawing, although the communication micom 434 and the display micom 432 exchange data with each other, the present invention is not limited thereto, and the communication micom 434 may directly exchange data with the main micom 310. .

On the other hand, the main microcomputer 310 may control the overall control operation in the refrigerator. To this end, the main microcomputer 310 may be referred to as a main microcomputer.

The main microcomputer 310 may exchange data with the memory 240, the compressor microcomputer 430, the display microcomputer 432, and the communication microcomputer 434. The main microcomputer 310 can also exchange data with the fan 444 and the heater 445.

The fan 444 of FIG. 6 may refer to both the above-described machine room fan 115 and the freezer compartment fan 144. The heater 445 of FIG. 6 may correspond to the freezer compartment defrost heater 330 and the home bar heater ( Not shown) and may refer to both filler heaters (not shown).

The main microcomputer 310 can grasp the operating state of the plurality of power consumption units in the refrigerator. For example, the compressor 310 can directly grasp the operating state of the freezer compartment defrost heater 330, the freezer compartment fan 144, etc. via the compressor microcomputer 430.

The main microcomputer 310 receives the compressor power consumption information Pc calculated by the compressor microcomputer 430, and according to the operation of the plurality of power consumption units, the pre-stored power consumption information for each unit and the calculated power consumption information Pc. The final power consumption can be calculated using the compressor power consumption information Pc.

Referring to FIG. 7, FIG. 7A illustrates a timing diagram illustrating compressor power consumption information Pc, and FIG. 7B illustrates power information Petc consumed by a power consumption unit in a refrigerator except a compressor. The timing diagram shown is illustrated. The main microcomputer 310 receives the compressor power consumption information Pc from the compressor microcomputer 430 and is stored in the memory 240 according to the compressor power consumption information Pc and the operation of the plurality of power consumption units. By summing the power consumption information for each unit, as shown in FIG. 7C, the final power consumption information Pref may be calculated. Accordingly, it is possible to simply calculate the total power consumption consumed in the refrigerator.

The compressor microcomputer 430 may calculate the compressor power consumption based on the output current flowing through the compressor motor. Accordingly, the compressor power consumption can be calculated without installing a separate power consumption measurement unit, and the final power consumption can be calculated using the power consumption of each unit, which is previously measured and stored in the memory 240. do. Accordingly, the manufacturing cost for power consumption calculation can be reduced.

The main microcomputer 310 may transfer the calculated final power consumption information Pref to the display microcomputer 432. The display microcomputer 432 may display the final power consumption information Pref or control to display the accumulated power consumption information based on the final power consumption information on the display unit 230 together with the predetermined period information.

On the other hand, the display micom 432, as described above, controls the display unit 230 disposed in the freezer compartment door, as well as ice for taking out the ice generated by the ice maker 190, which is disposed in the freezer compartment direction. It is also possible to control the dispenser motor 612 provided in the bank vibrator 175. In addition, the display micom 432 may grasp the operation status information idm of the dispenser motor 612, and may transfer the operation status information idm of the dispenser motor 612 to the main microcomputer 310.

FIG. 8 is a circuit diagram illustrating the compressor driver of FIG. 6.

Referring to the drawings, the compressor driver 113 according to an embodiment of the present invention, the converter 410, the inverter 420, the compressor micom 430, the dc terminal voltage detector (B), smoothing capacitor (C) , And an output current detector E. In addition, the driving device 400 may further include an input current detector A, a reactor L, and the like.

The reactor L is disposed between the commercial AC power supplies 405 and v _s and the converter 410 to perform power factor correction or boost operation. In addition, the reactor L may perform a function of limiting harmonic currents due to the fast switching of the converter 410.

The input current detector A can detect the input current i _s input from the commercial AC power supply 405. To this end, a CT (current trnasformer), a shunt resistor, or the like may be used as the input current detector A. FIG. The detected input current i _s may be input to the compressor microcomputer 430 as a discrete signal in the form of a pulse.

The converter 410 converts the commercial AC power supply 405 which passed through the reactor L into DC power, and outputs it. Although the commercial AC power supply 405 is shown as a single phase AC power supply in the figure, it may be a three phase AC power supply. The internal structure of the converter 410 also varies according to the type of the commercial AC power source 405.

Meanwhile, the converter 410 may be formed of a diode or the like without a switching element, and may perform rectification without a separate switching operation.

For example, in the case of single phase AC power, four diodes may be used in the form of a bridge, and in the case of three phase AC power, six diodes may be used in the form of a bridge.

On the other hand, the converter 410, for example, a half-bridge type converter that is connected to two switching elements and four diodes may be used, and in the case of a three-phase AC power supply, six switching elements and six diodes may be used. .

When the converter 410 includes a switching element, the boosting operation, the power factor improvement, and the DC power conversion may be performed by the switching operation of the switching element.

The smoothing capacitor C smoothes and stores the input power. In the figure, one element is illustrated as the smoothing capacitor C, but a plurality of elements may be provided to ensure device stability.

On the other hand, in the drawing, but is illustrated as being connected to the output terminal of the converter 410, not limited to this, a direct current power may be input directly, for example, a direct current power from a solar cell is supplied to the smoothing capacitor (C). It may be input directly or DC / DC converted. Hereinafter, the parts illustrated in the drawings will be mainly described.

On the other hand, since the DC power is stored at both ends of the smoothing capacitor C, this may be referred to as a dc terminal or a dc link terminal.

The dc end voltage detector B may detect a dc end voltage Vdc that is both ends of the smoothing capacitor C. To this end, the dc terminal voltage detector B may include a resistor, an amplifier, and the like. The detected dc terminal voltage Vdc may be input to the compressor microcomputer 430 as a discrete signal in the form of a pulse.

The inverter 420 includes a plurality of inverter switching elements, converts the smoothed DC power supply Vdc into three-phase AC power supplies va, vb and vc of a predetermined frequency by turning on / off an operation of the switching device, It may output to the synchronous motor 230.

Inverter 420 is a pair of upper arm switching elements Sa, Sb, Sc and lower arm switching elements S'a, S'b, S'c, which are connected in series with each other, and a total of three pairs of upper and lower arms The switching elements are connected in parallel with each other (Sa & S'a, Sb & S'b, Sc & S'c). Diodes are connected in anti-parallel to each of the switching elements Sa, S'a, Sb, S'b, Sc, and S'c.

The switching elements in the inverter 420 perform on / off operations of the respective switching elements based on the inverter switching control signal Sic from the compressor micom 430. As a result, the three-phase AC power supply having the predetermined frequency is output to the three-phase synchronous motor 230.

The compressor microcomputer 430 may control the switching operation of the inverter 420. To this end, the compressor microcomputer 430 may receive an output current i _o detected by the output current detector E.

The compressor microcomputer 430 outputs an inverter switching control signal Sic to the inverter 420 in order to control the switching operation of the inverter 420. The inverter switching control signal Sic is a switching control signal of the pulse width modulation system PWM, and is generated and output based on the output current value i _o detected by the output current detector E. FIG. A detailed operation of the output of the inverter switching control signal Sic in the compressor micom 430 will be described later with reference to FIG. 13.

The output current detector E detects the output current i _o flowing between the inverter 420 and the three-phase motor 230. That is, the current flowing through the motor 230 is detected. The output current detector E may detect all of the output currents ia, ib, and ic of each phase, or may detect the output currents of two phases by using three-phase equilibrium.

The output current detector E may be located between the inverter 420 and the motor 230, and a current trnasformer (CT), a shunt resistor, or the like may be used for current detection.

When a shunt resistor is used, three shunt resistors are located between the inverter 420 and the synchronous motor 230 or the three lower arm switching elements S'a, S'b, S'c of the inverter 420. It is possible to connect one end to each). On the other hand, it is also possible to use two shunt resistors using three-phase equilibrium. On the other hand, when one shunt resistor is used, the corresponding shunt resistor may be disposed between the above-described capacitor C and the inverter 420.

The detected output current i _o may be applied to the compressor microcomputer 430 as a discrete signal in the form of a pulse, and the inverter switching control signal Sic based on the detected output current i _o . Is generated. Hereinafter, it will be described that the detected output current (i _o ) is the three-phase output current (ia, ib, ic).

Meanwhile, the compressor motor 230 may be a three phase motor. The compressor motor 230 includes a stator and a rotor, and an alternating current power of a predetermined frequency is applied to the coils of the stators of the phases a, b, and c so that the rotor rotates. do.

Such a motor 230 is, for example, a Surface-Mounted Permanent-Magnet Synchronous Motor (SMPMSM), an Interior Permanent Magnet Synchronous Motor (IPMSM), and a synchronous clock. Synchronous Reluctance Motor (Synrm) and the like. Of these, SMPMSM and IPMSM are permanent magnet synchronous motors (PMSMs) with permanent magnets, and synrms have no permanent magnets.

Meanwhile, when the converter 410 includes a switching element, the compressor microcomputer 430 may control a switching operation of the switching element in the converter 410. To this end, the compressor microcomputer 430 may receive an input current i _s detected by the input current detector A. In addition, the compressor microcomputer 430 may output the converter switching control signal Scc to the converter 410 in order to control the switching operation of the converter 410. The converter switching control signal Scc is a pulse width modulation PWM switching control signal, and may be generated and output based on the input current i _s detected from the input current detector A. FIG.

On the other hand, the compressor microcomputer 430 may calculate the compressor power consumption based on the output current i _o detected by the output current detector E. FIG. For example, the compressor microcomputer 430 estimates the output voltage supplied to the compressor motor 230 using the detected output current i _o , and calculates the estimated output voltage and the output current i _o . The compressor power consumption can be calculated.

The compressor driver 113 may further include an output voltage detector (not shown) disposed between the inverter 420 and the compressor motor 230 to detect an output voltage supplied to the compressor motor 230. .

In this case, the compressor microcomputer 430 immediately calculates the compressor power consumption by using the output current i _o detected by the output current detector E and the output voltage detected by the output voltage detector (not shown). can do.

The compressor microcomputer 430 transmits the calculated compressor power consumption Pc to the main microcomputer 310 as described above.

9A to 9C are views referred to for describing a method of data communication between microcomputers in a refrigerator.

The main microcomputer 310 according to an exemplary embodiment of the present invention may receive operation information of each power consumption unit from other microcomputers, such as a display microcomputer, by various methods. On the other hand, the compressor power consumption is received from the compressor microcomputer 430.

First, referring to FIG. 9A, the circuit unit 610 in the refrigerator may include a plurality of micoms. As shown in the drawing, the main micom 310, the compressor micom 430, the display micom 432, and the communication micom ( 434).

The main microcomputer 310 may exchange data directly with the compressor microcomputer 430 and the display microcomputer 432, and may exchange data with the communication microcomputer 432 through the display microcomputer 432.

In this case, the main microcomputer 310 receives the compressor power consumption from the compressor microcomputer 430, and from the display microcomputer 432, information on the presence or absence of operation of the display unit 230 and the dispenser associated with the ice bank vibration unit 175. The operation information of the motor (idm), the ice maker operation information, the communication unit (not shown) and the like can receive information. Herein, the operation state information of the communication unit is transmitted from the communication micom 434 to the display micom 432 and again to the main micom 310.

Next, referring to FIG. 9B, the circuit unit 610 in the refrigerator may include a main micom 310, a compressor micom 430, a display micom 432, and an ice maker micom 436. In the case of FIG. 9B, it may be assumed that the communication unit and the communication micom are not provided in the refrigerator.

The main microcomputer 310 may exchange data directly with the compressor microcomputer 430, the display microcomputer 432, and the ice maker microcomputer 436.

In this case, the main microcomputer 310 may receive the compressor power consumption from the compressor microcomputer 430, and receive information on the presence or absence of operation of the display unit 230 from the display microcomputer 432, and the like. From 436, information on whether the dispenser motor associated with the ice bank vibrator 175 is operated, information on whether the ice maker operates, and the like may be received.

Next, referring to FIG. 9C, the circuit unit 610 in the refrigerator may include a main micom 310, a compressor micom 430, a display micom 432, a communication micom 434, and an ice maker micom 436. have.

The main micom 310 may exchange data directly with the compressor micom 430, the display micom 432, and the communication micom 434 except for the ice maker micom 436, and with the ice maker micom 436. Data may be exchanged through the display micom 432.

In this case, the main microcomputer 310 receives the compressor power consumption from the compressor microcomputer 430, and from the display microcomputer 432, information on the presence or absence of operation of the display unit 230 and the dispenser associated with the ice bank vibration unit 175. The operation information of the motor (idm), the ice maker operation information, and the like can be received, and the communication microcomputer 434, the operation information of the communication unit (not shown) and the like can be received. On the other hand, the operation information (idm) and the ice maker operation information of the dispenser motor associated with the ice bank vibrator 175 is transmitted from the ice maker miker 436 to the display micom 432, and again the main micom 310 Is sent).

On the other hand, operation of defrost heater 330, home bar heater, machine room fan motor, freezer fan motor, lighting unit for outputting light into the refrigerator, blast chiller, filler heater and the like, which are not described in FIGS. 9A to 9C Information may be received by the main microcomputer 310 through at least one of the microcomputers. Alternatively, corresponding information may be directly input to the main microcomputer 310.

10 is a diagram illustrating an example of power consumption for each unit stored in a memory.

Referring to the drawings, power consumption for each unit may be stored in the memory 240 as the lookup table 1010 as shown in the figure.

Looking at the table 1010, the power consumption of the defrost heater can be classified into A1, the power consumption of the home bar heater, A2, and the power consumption of the circuit unit A3. Among them, A1, the power consumption of the defrost heater, may be the largest, and A3, the power consumption of the circuit unit, may be the smallest.

For example, the main microcomputer 310 receives the power consumption A1 and the circuit power consumption A3 of the defrost heater from the memory 240 during the operation of the defrost heater and the circuit unit, and the compressor power Pc and the compressor. In sum, the final power consumption can be calculated.

On the other hand, the table 1010, for the machine room fan motor and the freezer compartment fan motor, the power consumption can be divided and stored for each section. As shown in the figure, when the machine room fan motor operates, the lower the rotational speed is, the corresponding power consumption may be classified in the order of A4, A5, and A6. Similarly, during the operation of the freezer compartment fan motor, the lower the rotational speed is, the corresponding power consumption may be classified in the order of A7, A8, and A9.

For example, when the defrost heater, the circuit unit, and the machine room fan motor operate at a high speed, and the freezer chamber motor operates at the high speed, the main microcomputer 310 consumes power of the defrost heater A1 and power consumption of the circuit part A3. ), The power consumption A5 of the machine room fan motor and the power consumption A7 of the freezer compartment fan motor are input from the memory 240, and the final power consumption can be calculated by adding up the compressor power consumption Pc.

Meanwhile, power consumption corresponding to the memory 240 may also be stored in the lighting unit, the blast chiller, the ice bank, the filler heater, and the like, which are not described in the table 1010 of FIG. 10.

Meanwhile, the table 1010 of FIG. 10 may be power consumption that is experimentally derived by a manufacturer in advance, and items in the table may vary or sizes of power consumption may vary for each refrigerator model. In addition, through the communication unit (not shown), the items in the table, or the amount of power consumption for the item may be updated.

11 is a diagram referred to describe power consumption compensation.

Each power consumption unit of the refrigerator 10 causes component scattering during manufacture. In consideration of this, the memory 240 may store information on the distribution of each component.

In the embodiment of the present invention, in order to increase the accuracy of the final power consumption consumed in the refrigerator, which is calculated in the main microcomputer 310, the power consumption of each unit is compensated in consideration of the component distribution.

Referring to FIG. 11, the degree of component spread may have a value between the LSL and the USL. In order to calculate the power consumption compensation value, the drawing illustrates that the Gaussian pulse according to the component dispersion is moved in the USL direction to calculate a correction value.

For example, in the memory, the Ln value is stored as the power consumption of the one-side defrost heater, but when the dispersion of the defrost heater 330 is close to the USL, the main microcomputer 310 compensates in consideration of the power consumption compensation value. As the power consumption, the Lm value can be calculated. This enables accurate power consumption calculation in consideration of component distribution.

On the other hand, component spreading can occur in each of the power consumption units, respectively, but is particularly likely to occur in heaters in the refrigerator.

Accordingly, in the embodiment of the present invention, among the power consumption units in the refrigerator, only the heaters, for example, the defrost heater, the home bar heater, the pillar heater, and the like, the component dispersion described in FIG. In consideration, power consumption compensation may be applied.

On the other hand, in addition to the power consumption compensation in consideration of the component distribution described in FIG. 11, various power consumption compensations are possible.

As another example of power consumption compensation, in the case of a unit operating by receiving an AC power among the power consumption units in the refrigerator, since the level variability of the AC power is large, it is possible to compensate for the power consumption in consideration of this.

As illustrated in FIG. 8, when the input AC power source 405 is converted into a DC power source through the converter 410, the DC power source Vdc is smoothed and stored in the capacitor C, so that the capacitor C The dc terminal voltage (Vdc), which is at both ends of, is substantially flat.

On the contrary, since the units operating with the input AC power supply receive the input AC power as it is, without a separate smoothing means, it is necessary to compensate for this in consideration of the sequence of the input AC power supply.

As one method for compensating, it is possible to use the dc terminal voltage Vdc in the compressor driver 113 of FIG. 8. For example, the difference between the instantaneous value of the dc terminal voltage and the reference value (average value) of the dc terminal voltage may be used to compensate for the power consumption by the difference.

For example, when the defrost heater 330 operates and the reference value (average value) of the dc terminal voltage is 300 V, but the instantaneous value of the dc terminal voltage detected by the dc terminal voltage detector is 270 V, the difference is 30 V, and the ratio is Is equivalent to 10%. Accordingly, when the power consumption stored in the memory for the defrost heater 330 is 30W (A1 in FIG. 10), the main microcomputer 310 compensates for the power consumption, and as the compensation power consumption for the defrost heater 330. Can compute 27W. The main microcomputer 310 can add up the compensation power consumption 27W and the compressor power consumption 100W to calculate 127W as the final power consumption.

Meanwhile, as another example of power consumption compensation, when peak power consumption due to instantaneous large load is generated, it may be compensated for.

To this end, it is possible to use the dc terminal voltage (Vdc) in the compressor driver 113 of FIG. For example, the difference between the instantaneous value of the dc terminal voltage () and the reference value (average value) of the dc terminal voltage (Vdc) may be used to compensate for the power consumption by the difference.

For example, when the defrost heater 330 operates and the reference value (average value) of the dc terminal voltage is 300 V, but the instantaneous value of the dc terminal voltage detected by the dc terminal voltage detector is 270 V, the difference is 30 V, and the ratio is Is equivalent to 10%. Accordingly, when the power consumption stored in the memory for the defrost heater 330 is 30W (A1 in FIG. 10), the main microcomputer 310 compensates for the power consumption, and as the compensation power consumption for the defrost heater 330. Can compute 27W. The main microcomputer 310 can add up the compensation power consumption 27W and the compressor power consumption 100W to calculate 127W as the final power consumption.

Meanwhile, as another example of power consumption compensation, when peak power consumption due to instantaneous large load is generated, it may be compensated for.

To this end, it is possible to use the dc terminal voltage (Vdc) in the compressor driver 113 of FIG. That is, when the instantaneous value of the dc terminal voltage exceeds the allowable value for a predetermined time, a temporary load change occurs, so that power consumption can be compensated for in consideration of this.

For example, the defrost heater 330 operates, the reference value (average value) of the dc terminal voltage is 300 V, and the allowable value is 400 V, but the instantaneous value of the dc terminal voltage detected by the dc terminal voltage detector is 450 V for 6 minutes. In this case, the difference from the reference value is 150V, which corresponds to 50%. Accordingly, when the power consumption stored in the memory for the defrost heater 330 is 30 W / h per hour (A1 in FIG. 10), the main micom 310 compensates for the defrost heater 330. As the power consumption, considering the ratio (50%) according to the difference between the time factor 6/60 and the reference value, 33W may be calculated as the compensation power consumption for the defrost heater 330. The main microcomputer 310 can add up the compensation power consumption 33W and the compressor power consumption 100W to calculate 133W as the final power consumption.

Meanwhile, as another example of power consumption compensation, when the fan is connected and the fan does not operate, this may be compensated. For example, when a command is issued from the main microcomputer 310 and the freezer compartment fan 144 is operated, but the circuit wiring of the fan motor to the freezer compartment fan 144 is connected, the actual freezer compartment fan 144 is connected. Since this operation does not work, no power consumption occurs.

In this case, when the output current flowing through the fan motor is not detected or is less than the reference value, the main microcomputer 310 determines that the connection to the freezer compartment fan 144 occurs, and finalizes the power consumption according to the operation of the freezer compartment fan 144. Can be excluded when calculating power consumption.

By such various compensation methods, the main microcomputer 310 can accurately calculate the final power consumption.

12 is a flowchart illustrating a method of operating a refrigerator according to an embodiment of the present invention.

Referring to the drawings, FIG. 12 illustrates a method for calculating the final power consumption in the main microcomputer 310. First, the main microcomputer 310 determines whether a predetermined time has elapsed since the last power consumption calculation. It is determined whether or not (S1210). If applicable, the circuit power consumption is first calculated as the refrigerator power consumption (S1215).

The main microcomputer 310 may periodically calculate the final power consumption calculation. For example, since the main microcomputer 310 and the compressor microcomputer 430 communicate every two seconds, the final power consumption may be calculated every two seconds.

On the other hand, since the circuit portion of the refrigerator is always in operation, the main microcomputer 310 first reads the power consumption A3 of the circuit portion shown in FIG. 10 from the memory 240 and determines it as the power consumption.

Next, the main microcomputer 310 determines whether the compressor is on, based on the information from the compressor microcomputer 430 (S1220), and, if applicable, the compressor power consumption received from the compressor microcomputer 430. The power consumption of the refrigerator is calculated by adding Pc and the power consumption of the circuit unit A3 (S1225).

Next, the main microcomputer 310 determines whether the machine room fan motor is operated (S1230), and if applicable, stores any one A4 of power consumption A4-A6 of the machine room fan motor in the memory 240. It reads from and adds the power consumption A4 of a machine room fan motor further (S1235).

On the other hand, when the machine room fan motor does not operate, the main microcomputer 310 does not add up the power consumption of the machine room fan motor.

Next, the main microcomputer 310 determines whether the freezer compartment fan motor is operated (S1240), and if applicable, stores one of the power consumptions (A7-A9) A7 of the freezer compartment fan motor in the memory 240. It reads from and further sums up the power consumption A7 of a freezer compartment fan motor (S1245).

On the other hand, when the freezer compartment fan motor does not operate, the main microcomputer 310 does not add up the power consumption of the freezer compartment fan motor.

Next, the main microcomputer 310 determines whether the home bar heater is operating (S1250), and if applicable, reads the power consumption A2 of the home bar heater from the memory 240, and the power consumption of the home bar heater ( A2) is further summed up (S1255).

On the other hand, when the home bar heater does not operate, the main microcomputer 310 does not add up the power consumption of the home bar heater.

Next, the main microcomputer 310 calculates and outputs power consumption summed up to steps 1215 to 1255 as the final power consumption (S1260). Accordingly, the display unit 230 may display the final power consumption.

In this case, the display unit 230 may display the refrigerator power consumption for the first period (eg, 1 day) or display the refrigerator power consumption for the second period (eg, 1 month).

Alternatively, the display unit 230 may indicate whether the refrigerator power consumption is increased or decreased by comparing the periods. Alternatively, the period-by-period comparison may indicate whether the power consumption cost has increased or decreased with respect to the refrigerator power consumption.

On the other hand, the display unit 230 may display the refrigerator power consumption related information at regular intervals or display the refrigerator power consumption related information for a predetermined time (for example, 15 minutes).

Thereby, the user can intuitively recognize the power consumption of the refrigerator.

Referring to FIG. 13, the compressor microcomputer 430 may include an axis converter 510, a speed calculator 520, a current command generator 530, a voltage command generator 540, an axis converter 550, and The switching control signal output unit 560 may be included.

The axis conversion unit 510 receives the three-phase output currents (ia, ib, ic) detected by the output current detection unit E, and converts the two-phase currents i α and i β of the stationary coordinate system.

On the other hand, the axis conversion unit 510 can convert the two-phase current (iα, iβ) of the stationary coordinate system into the two-phase current (id, iq) of the rotary coordinate system.

)와 연산된 속도(

)를 출력할 수 있다.The speed calculator 520 calculates the calculated position (based on the two-phase currents iα and iβ of the stationary coordinate system axially changed by the axis converter 510).

) And computed speed (

) Can be printed.

)와 속도 지령치(ω^* _r)에 기초하여, 전류 지령치(i^* _q)를 생성한다. 예를 들어, 전류 지령 생성부(530)는, 연산 속도(

)와 속도 지령치(ω^* _r)의 차이에 기초하여, PI 제어기(535)에서 PI 제어를 수행하며, 전류 지령치(i^* _q)를 생성할 수 있다. 도면에서는, 전류 지령치로, q축 전류 지령치(i^* _q)를 예시하나, 도면과 달리, d축 전류 지령치(i^* _d)를 함께 생성하는 것도 가능하다. 한편, d축 전류 지령치(i^* _d)의 값은 0으로 설정될 수도 있다. On the other hand, the current command generation unit 530 has a calculation speed (

) And the current command value i ^* _q based on the speed command value ω ^* _r . For example, the current command generation unit 530 has a calculation speed (

) Based on the difference between the speed command value (ω ^* _r ) and the PI controller 535 to perform PI control, and generate a current command value (i ^* _q ). In the drawing, although the q-axis current command value i ^* _q is illustrated as a current command value, it is also possible to generate | generate a d-axis current command value i ^* _d unlike a figure. On the other hand, the value of the d-axis current command value i ^* _d may be set to zero.

On the other hand, the current command generation unit 530 may further include a limiter (not shown) for limiting the level so that the current command value i ^* _q does not exceed the allowable range.

Next, the voltage command generation unit 540 includes the d-axis and q-axis currents i _d and i _q which are axis-converted in the two-phase rotation coordinate system by the axis conversion unit, and the current command value (such as the current command generation unit 530). Based on i ^* _d , i ^* _q ), the d-axis and q-axis voltage command values v ^* _d and v ^* _q are generated. For example, the voltage command generation unit 540 performs PI control in the PI controller 544 based on the difference between the q-axis current i _q and the q-axis current command value i ^* _q , and q The axial voltage setpoint v ^* _q can be generated. In addition, the voltage command generation unit 540 performs PI control in the PI controller 548 based on the difference between the d-axis current i _d and the d-axis current command value i ^* _d , and the d-axis voltage. The setpoint (v ^* _d ) can be generated. On the other hand, the voltage command generation unit 540 may further include a limiter (not shown) for restricting the level so that the d-axis and q-axis voltage command values v ^* _d and v ^* _q do not exceed the allowable range. .

On the other hand, the generated d-axis and q-axis voltage command values v ^* _d and v ^* _q are input to the axis conversion unit 550.

)와, d축, q축 전압 지령치(v^* _d,v^* _q)를 입력받아, 축변환을 수행한다.The axis conversion unit 550 may calculate a position calculated by the speed calculating unit 520 (

), And the d-axis and q-axis voltage command values (v ^* _d , v ^* _q ) are input, and axis conversion is performed.

)가 사용될 수 있다.First, the axis transformation unit 550 converts the two-phase rotation coordinate system from the two-phase rotation coordinate system. At this time, the position calculated by the speed calculator 520 (

) Can be used.

The axis transform unit 550 converts the two-phase stationary coordinate system into a three-phase stationary coordinate system. Through this conversion, the axis conversion unit 1050 outputs the three-phase output voltage command values v ^* a, v ^* b, v ^* c.

The switching control signal output unit 560 generates an inverter switching control signal Sic according to the pulse width modulation (PWM) method based on the three-phase output voltage command values (v ^* a, v ^* b, v ^* c). To print.

The output inverter switching control signal Sic may be converted into a gate driving signal by a gate driver (not shown) and input to the gate of each switching element in the inverter 420. As a result, each of the switching elements Sa, S'a, Sb, S'b, Sc, and S'c in the inverter 420 performs a switching operation.

14 is a diagram illustrating various examples of a home appliance according to another embodiment of the present invention, and FIG. 15 is a simplified internal block diagram of the home appliance of FIG. 14.

According to an embodiment of the present invention, a home appliance includes a first power consumption unit, a first microcomputer that calculates first power consumed by the first power consumption unit, a plurality of power consumption units, and calculated first power information. And a main microcomputer for calculating final power consumption by using pre-stored power consumption information and calculated power consumption information for each unit according to whether the plurality of power consumption units are operated.

Such a home appliance includes a refrigerator 1 of FIG. 1, a washing machine 200b of FIG. 14A, an air conditioner 200c of FIG. 14B, a cooking appliance 200d of FIG. 14C, and FIG. and d) the robot cleaner 200e. Hereinafter, except for the refrigerator 1 described above, the washing machine 200b, the air conditioner 200c of FIG. 14 (b), the cooking appliance 200d of FIG. 14 (c), and the robot cleaner 200e of FIG. 14 (d). Etc.).

The home appliance 200 of FIG. 15 includes an input unit 221 for user input, a display unit 231 for displaying an operation state of a home appliance, a driving unit 223 for driving a home appliance, product information of a home appliance, It may include a memory 241 for storing the operation information, and the main microcomputer 211 for the overall control of the home appliance.

For example, when the home appliance is the washing machine 200b, the driving unit 223 may include a motor microcomputer 224 for driving the motor 226 for supplying rotational force to the drum or tub.

As another example, when the home appliance is the air conditioner 200c, the driving unit 223 may include a motor microcomputer 224 for driving the compressor motor in the outdoor unit.

In another example, when the home appliance is the cooking appliance 200d, the driving unit 223 may include a microwave microcomputer (not shown) for outputting microwaves into the cavity.

In another example, when the home appliance is the cleaner 200e, the driving unit 223 may include a motor microcomputer 224 for driving a fan motor for air suction or a motor operating for movement.

The home appliance 200 calculates power consumption for the maximum power consumption unit of which power consumption is greatest, and for other power consumption units, using the power consumption information previously stored in the memory 241, The final power consumption can be calculated.

For example, when the home appliance is the air conditioner 200c, the motor microcomputer 224 for driving the compressor motor may calculate the compressor power consumption. The compressor power consumption calculation can be calculated based on the output current flowing through the compressor motor, similar to the refrigerator. The power consumption of the other power consumption unit may use a value stored in the memory 241. Finally, the main microcomputer 211 may calculate the final power consumption by using the calculated compressor power consumption and power consumption of each unit stored in the memory 241. This makes it possible to easily calculate the final power consumption.

On the other hand, when the home appliance is a washing machine 200b, the motor microcomputer 224 may calculate the power consumption of the motor for rotating the drum or the tub. The motor power consumption can be calculated based on the output current flowing in the motor. The power consumption of the other power consumption unit may use a value stored in the memory 241. Finally, the main microcomputer 211 may calculate the final power consumption by using the calculated motor power consumption and power consumption of each unit stored in the memory 241. This makes it possible to easily calculate the final power consumption.

On the other hand, when the home appliance is a cooking appliance 200d, the microcomputer (not shown) in the driving unit may calculate the power consumption at the microwave generating unit, which operates for the microwave generation. The power consumption of the microwave generator may be calculated by the microcomputer in the driver based on the output current output from the inverter (not shown) when the microwave generator (not shown) operates based on the inverter (not shown). Can be. The power consumption of the other power consumption unit may use a value stored in the memory 241. Finally, the main microcomputer 211 may calculate the final power consumption by using the calculated power consumption of the microwave generator and power consumption of each unit stored in the memory 241. This makes it possible to easily calculate the final power consumption.

On the other hand, when the home appliance is the cleaner 200e, the motor microcomputer 224 may calculate the power consumption of the motor. The motor power consumption can be calculated based on the output current flowing in the motor. The power consumption of the other power consumption unit may use a value stored in the memory 241. Finally, the main microcomputer 211 may calculate the final power consumption by using the calculated motor power consumption and power consumption of each unit stored in the memory 241. This makes it possible to easily calculate the final power consumption.

Meanwhile, the home appliance 200 may perform various power consumption compensation as described above in the description of the refrigerator. In particular, compensation may be performed on power consumption stored in the memory 241.

For example, the main micom 211 may compensate the power consumption of at least one of the units operated by an AC power source among the plurality of power consumption units. Specifically, when some units operate with an AC power source, power compensation may be performed in consideration of the instantaneous value of the AC power source. The final power consumption may be calculated based on the compensated power consumption information and the calculated power consumption information.

As another example, the main microcomputer 211 may perform power consumption compensation for at least one of the units of which the power consumption is greater than or equal to a predetermined value among the plurality of power consumption units. Specifically, power consumption compensation may be performed with respect to the defrost heater among the plurality of power consumption units in consideration of component scattering and the like.

On the other hand, in this regard, the main microcomputer 211 may not perform power consumption compensation even when a compensation condition occurs for a unit of which power consumption is lower than a reference value. That is, since the power consumption is small, a certain level of error will be acceptable.

As another example, the main microcomputer 211 compensates for power consumption consumed in each unit in consideration of the presence or absence of operation of the plurality of power consumption units and the distribution of components of the plurality of power consumption units stored in the memory 240. Based on the consumed power consumption information and the calculated power consumption, the final power consumption may be calculated.

Also, as another example, the main microcomputer 211 may be configured to provide power consumption for some of the plurality of power consumption units in operation when the DC power supply of the dc stage for driving the motor exceeds the allowable value for a predetermined time. , The power compensation may be performed, and the final power consumption may be calculated based on the compensated power consumption information and the calculated power consumption information.

On the other hand, the main microcomputer 211 may not compensate for the power consumption of the circuit unit related to the circuit board PCB among the plurality of power consumption units.

On the other hand, the main microcomputer 211 may compensate for power in consideration of the instantaneous peak power when the instantaneous peak power occurs within the power calculation period, and may not separately compensate for the power consumption period when it is not within the power calculation period.

A refrigerator, a home appliance, and a method of operating the same according to the present invention are not limited to the configuration and method of the embodiments described above, but the embodiments are all or all of the embodiments so that various modifications can be made. Some may be optionally combined.

On the other hand, the operating method of the refrigerator of the present invention, it is possible to implement as a processor readable code on a processor-readable recording medium provided in the refrigerator. The processor-readable recording medium includes all kinds of recording devices that store data that can be read by the processor. Examples of the processor-readable recording medium include ROM, RAM, CD-ROM, magnetic tape, floppy disk, optical data storage device, and the like, and may also be implemented in the form of a carrier wave such as transmission over the Internet. . The processor-readable recording medium can also be distributed over network coupled computer systems so that the processor-readable code is stored and executed in a distributed fashion.

In addition, although the preferred embodiment of the present invention has been shown and described above, the present invention is not limited to the specific embodiments described above, but the technical field to which the invention belongs without departing from the spirit of the invention claimed in the claims. Of course, various modifications can be made by those skilled in the art, and these modifications should not be individually understood from the technical spirit or the prospect of the present invention.

Claims (22)

A motor for driving the compressor;
An output current detector for detecting a current flowing in the motor;
A compressor micom that calculates power consumed by the compressor based on the detected output current;
A plurality of power consumption units;
Receives the calculated compressor power consumption information, and calculates final power consumption by using pre-stored power consumption information for each unit and the calculated compressor power consumption information according to whether the plurality of power consumption units are operated or not. To include the main microcomputer;
The main microcomputer,
Compensating the stored power consumption information with respect to a power consumption unit that receives AC power among the plurality of power consumption units and operates the final power based on the compensated power consumption information and the calculated power consumption information. A refrigerator characterized by calculating power consumption. The method of claim 1,
And a memory configured to output corresponding power consumption information to the main microcomputer according to the operation of the plurality of power consumption units. The method of claim 2,
The memory,
And power consumption information for each of the plurality of power consumption units. The method of claim 3,
The plurality of power consumption units,
A refrigerator comprising a defrost heater, a circuit unit, a machine room fan motor, a freezer compartment fan motor, and an illumination unit. The method of claim 4, wherein
The plurality of power consumption units,
And at least one of a blast chiller, an ice bank vibrator, a home bar heater, and a filler heater. The method of claim 1,
And an output voltage detector configured to detect an output voltage supplied to the motor.
The compressor microcomputer,
And calculating the compressor power consumption based on the detected output current and the output voltage. The method of claim 1,
The main microcomputer,
Performing power compensation on power consumption of some of the plurality of power consumption units in operation;
And calculating the final power consumption based on the compensated power consumption information and the calculated compressor power consumption information. The method of claim 1,
The main microcomputer,
The refrigerator, characterized in that when the unit is operated by the AC power, the compensation of the stored power consumption information in consideration of the instantaneous value of the AC power. The method of claim 7, wherein
In order to drive the compressor, by using a direct current power source, an inverter for outputting an AC power source;
The main microcomputer,
When the some units are operated by an AC power source, the power consumption of the some units is compensated by using a difference value between the DC power value and the DC reference value, and the compensated power consumption information and the calculated compressor And calculating final power consumption of the refrigerator based on the power consumption information. The method of claim 1,
A converter for converting input AC power into DC power;
A capacitor for storing the converted DC power;
An inverter for outputting a switching control signal to the compressor;
And a dc end voltage detector configured to detect a voltage across the capacitor. The method of claim 1,
And a display unit which displays the final power consumption information or cumulative power consumption information based on the final power consumption. The method of claim 11,
A display micom for controlling the display unit;
An ice maker micom that controls the ice maker;
A communication micom for controlling a communication unit performing wired communication or wireless communication; At least one of,
The main microcomputer,
Receiving at least one of the display unit operation information, the ice maker operation information, the communication unit operation information, and the ice bank operation information for extracting the ice ice from the ice maker from at least one of the display micom, the ice maker micom, and the communication micom Refrigerator, characterized in that. The method of claim 12,
The main microcomputer,
And receiving the ice bank operation information from the display micom. The method of claim 1,
A memory for storing component distributions of the plurality of power consumption units;
The main microcomputer,
In consideration of the presence or absence of operation of the plurality of power consumption units and the distribution of components of the plurality of power consumption units, power consumption consumed by each unit is compensated for, and the compensated power consumption information and the calculated compressor power consumption And calculating the final power consumption. The method of claim 1,
Freezer fans; And
And a freezer compartment fan driving unit for driving the freezer compartment fan.
The main microcomputer,
When the freezer compartment fan fails to drive due to the connection of the freezer compartment fan, except for the freezer fan power consumption, the final power consumption is calculated. The method of claim 1,
In order to drive the compressor, by using a direct current power source, an inverter for outputting an AC power source;
The main microcomputer,
When the DC power supply exceeds the allowable value for a predetermined time, power compensation is performed on power consumption of some of the plurality of power consumption units in operation;
And calculating the final power consumption based on the compensated power consumption information and the calculated compressor power consumption information. delete delete delete A first power consumption unit;
A first micom that calculates first power consumed by the first power consumption unit;
A plurality of power consumption units; And
Receive the calculated first power information, and calculate final power consumption by using pre-stored power consumption information for each unit and the calculated power consumption information according to whether the plurality of power consumption units are operated or not. To include the main microcomputer;
The main microcomputer,
Compensating the stored power consumption information with respect to a power consumption unit that receives AC power among the plurality of power consumption units and operates the final power based on the compensated power consumption information and the calculated power consumption information. A home appliance, characterized by calculating power consumption. The method of claim 20,
And the first power consumption unit is a maximum power consumption unit in the home appliance. delete

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